Instead, it relies on an ultrasonic distance sensor to detect a hand (or foot) waved in front of the door. An Arduino Leonardo runs the show, sounding a buzzer when the ultrasonic sensor is triggered.

The latter application pushed Tesla to develop new sensors, or new ways to hide the sensors, because CEO Elon Musk didn’t like the idea of a visible sensor in the middle of a door. He said when ...

This Ultrasonic Sensor Circuit consists of a set of ultrasonic receiver and transmitter which operate at the same frequency. When something moves in the area covered the circuit’s fine balance is ...

Traditional ultrasonic sensor designs determine sensor-to-target distances by timing the propagation delay of high-frequency sound pulses as they travel from the sensor to the target and return.

A new category of sensing technology transforms mobile robot vision from 2D to 3D, improves safety performance and provides 50-80% cost savings compared to traditional, LiDAR- ...

Instead, it relies on an ultrasonic distance sensor to detect a hand (or foot) waved in front of the door. An Arduino Leonardo runs the show, sounding a buzzer when the ultrasonic sensor is triggered.